| 摘要 |
There is provided a method of working a plain bearing 11 and a working apparatus of the plain bearing, to a plurality of inclined surfaces of different angles in portions on both sides of the plain bearing. In the working method and apparatus, a working holder 18 is provided which has a groove (20, Fig 4) extending on the inner peripheral surface in the peripheral direction and step-like portions on both sides of the groove, a half bearing 11 is housed in the working holder 18, and both ends of the half bearing 11 in the peripheral direction are pressed by use of pressing means (24, Fig 4). Then, the half bearing undergoes plastic deformation so as to be fitted into the groove and both sides of the half bearing in the axial direction thereof come into abutment with edges 22, 23 of the step-like portions and are deformed in a polygonal line form. In this state, both ends of the half bearing 11 in the axial direction thereof are cut along one cylindrical surface only by use of a broach 19. As a result, two inclined surfaces of different angles ( a 1, a 2, Fig 5) are continuously formed in the portions of both sides of the bearing alloy metal 13 of the half bearing. |
